From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D20419BBC for ; Tue, 1 Jul 2025 01:19:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751332784; cv=none; b=tUCBOg/judXfzGYTnlZbB9R9rUM4LQLZ1aQ6SbNOUUOo/3ePwinlejyN7USSBTPg0XP/OSLYTmEBObGSA8cNN1+xLJCv+M0t/E3xxwO9/DBQ1/vghqvAVgmIzKc9H3RUePlGqP50h/lZPAP3Q+gxO/ab/q0sOhCmz/dvKcaL3Ss= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751332784; c=relaxed/simple; bh=IBrSc8GQxBLzdhJs3zZneH4hHyIxkjkI6oPZM8dFnXU=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=Eh6VDWehDkPJei9amPtIoCP84RUioH9iuo4IQ9IVCSUvgONIQbzUgAODtzaNoisdRR259f+oRoJLZ3zHjlRXpA0QpVTNLDybGGaHUkBOwCuuSaVVGPoZUUwGiNTCG2xElcnVsFcJTw/ZaVd/MB75qL6PJsIDBkr49vW5dxDFKEM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=O0Q1Pqlv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="O0Q1Pqlv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 743C4C4CEE3; Tue, 1 Jul 2025 01:19:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751332782; bh=IBrSc8GQxBLzdhJs3zZneH4hHyIxkjkI6oPZM8dFnXU=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=O0Q1PqlvAjchaVuylt9Q9Uo0ZaaQNB72pr4B9HFBHhbveoNX1J37pI5Nrz9AvFTUg ag0CaqvQqPvNoNPfi5rY7887I8FUkYg5vD1EDV+kfqAopQmW2iPUsAxRdPjaVBngEg ytp8j2y3Yv7anqfu4Swg7JhliMd9RWFjsD5dZaukEP5ZAIfyGysjTKH6YFzN4/NaSS FVCqsAcjbAk7Gdnw8SzLe0qrgvB+vyUajsSWC95Po1yTLMpsa9Efb/3ess+xCfHEof KZnxig4yUC0MCxAnANOl+58IKRWP7UZpJL1HPPFtLu9jNhZWL9BqCf8y8aS5s414As BbSaLUg13Y1tQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id ADE1338111CE; Tue, 1 Jul 2025 01:20:08 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net-next] ipv6: guard ip6_mr_output() with rcu From: patchwork-bot+netdevbpf@kernel.org Message-Id: <175133280734.3630108.2288047934531939034.git-patchwork-notify@kernel.org> Date: Tue, 01 Jul 2025 01:20:07 +0000 References: <20250627115822.3741390-1-edumazet@google.com> In-Reply-To: <20250627115822.3741390-1-edumazet@google.com> To: Eric Dumazet Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, kuniyu@google.com, dsahern@kernel.org, netdev@vger.kernel.org, eric.dumazet@gmail.com, syzbot+0141c834e47059395621@syzkaller.appspotmail.com, petrm@nvidia.com, roopa@nvidia.com, razor@blackwall.org, bpoirier@nvidia.com, idosch@nvidia.com Hello: This patch was applied to netdev/net-next.git (main) by Jakub Kicinski : On Fri, 27 Jun 2025 11:58:21 +0000 you wrote: > syzbot found at least one path leads to an ip_mr_output() > without RCU being held. > > Add guard(rcu)() to fix this in a concise way. > > WARNING: net/ipv6/ip6mr.c:2376 at ip6_mr_output+0xe0b/0x1040 net/ipv6/ip6mr.c:2376, CPU#1: kworker/1:2/121 > Call Trace: > > ip6tunnel_xmit include/net/ip6_tunnel.h:162 [inline] > udp_tunnel6_xmit_skb+0x640/0xad0 net/ipv6/ip6_udp_tunnel.c:112 > send6+0x5ac/0x8d0 drivers/net/wireguard/socket.c:152 > wg_socket_send_skb_to_peer+0x111/0x1d0 drivers/net/wireguard/socket.c:178 > wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] > wg_packet_tx_worker+0x1c8/0x7c0 drivers/net/wireguard/send.c:276 > process_one_work kernel/workqueue.c:3239 [inline] > process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3322 > worker_thread+0x8a0/0xda0 kernel/workqueue.c:3403 > kthread+0x70e/0x8a0 kernel/kthread.c:464 > ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 > > > [...] Here is the summary with links: - [net-next] ipv6: guard ip6_mr_output() with rcu https://git.kernel.org/netdev/net-next/c/af232e7615e4 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html